i went to mygames samsung in portugal and played halo there.
it was halo reach but with no default maps and two new ones (battle creek and penance) and i played a lil forge on them and i can guaranteeeee there is no special space to forge in, battle creek only had new rocks and a new gravity lift (the rest you can find in normal reach maps but no forge world items) and nothing more, while penance only had the new bridges BUT they were incomplete, the model was incomplete (i will share some pics later, remember i took the pictures with my crappy cell phone)
i guess they were still beta maps becouse of the penance thing and i didnt see the grunts/turrets on the waterfall of penance.
i will share my pictures later